Fig. 4

Seasonal patterns of Ae. albopictus diapause and hatching of diapause eggs in Guangzhou. a Seasonal patterns of oviposition activity and diapause incidence of Ae. albopictus in the field in Guangzhou, China. Twenty improved ovitraps were placed at Tonghe, Baiyun District, and eggs were collected weekly from 24 September 2016 to 16 December 2017. The numbers of eggs collected per improved ovitrap per week are shown. b Monitoring of the hatching of diapause eggs of Ae. albopictus in the field in Guangzhou, China. The hatching was monitored daily using 10 improved ovitraps at Tonghe, Baiyun District in Guangzhou from 10 December 2016 to 30 April 2017. The blue line represents the monitoring of the first larvae. The green line represents the monitoring of the first pupae. The periods with yellow backgrounds in both (a) and (b) represent the same period